Papers by M. Hagidimitriou
Tree pruning residues have relatively high heating value and could be burned in electricity gener... more Tree pruning residues have relatively high heating value and could be burned in electricity generation power plants, mitigating the energy dependence on fossil fuels and providing renewable energy. This can be very important for isolated areas, eg. islands, which still lack access to a central electricity supply system. The purpose of this work is to investigate the potential of tree pruning biomass fired power plants for electricity generation applications in Greece, and also demonstrate the technical, economic and environmental benefits from the direct combustion of tree pruning residues. Computational results based on realworld technical and economic data are presented and discussed. The sensitivity of the results to economic parameter values is also examined and some interesting trends are identified.
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Acta Horticulturae, 2011
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Acta Horticulturae, 2011
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Tree Genetics & Genomes, 2009
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Acta Horticulturae, 2021
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The Mastic Tree, Pistacia Lentiscus var. chia, belongs to the Anacardiaceae family and is cultiva... more The Mastic Tree, Pistacia Lentiscus var. chia, belongs to the Anacardiaceae family and is cultivated only on the southern part of the Greek island of Chios. The male tree gives a resin product known for its therapeutic qualities. Morphological characteristics suggest the existence of different genotypes that also differ in quantity and quality of the resin production. The four major genotypes of the male mastic tree, Votomos, Maroulitis, Mavroskinos and Siderakikos, have distinct phenotypes and can be easily identified. In the present study the genetic diversity between the different genotypes among the male mastic trees and female was studied using two different molecular marker techniques, RAPD and ISSR. Based on the molecular results of the present study, the entries show genetic diversity among the genotypes and within the different individuals. The female tree was grouped separately from the four different male genotypes.
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Journal of the American Society for Horticultural Science, 2005
The aim of the present study was to develop a reliable reference database to discriminate between... more The aim of the present study was to develop a reliable reference database to discriminate between the major Greek olive (Olea europaea L.) cultivars and reveal their genetic relationships, since Greece is considered a secondary center of diversity. In order to establish genetic relationships among the 26 Greek and eight international cultivars, four amplified fragment length polymorphism (AFLP) primer pairs, 12 randomly amplified polymorphic DNA (RAPD) primers, along with measurements from 10 morphological traits, were used. A total of 576 AFLP and 113 RAPD markers were produced. Genetic similarities, estimated using the Jaccard algorithim, ranged from 0.45 to 0.83 for the AFLP data and 0.27 to 0.87 for the RAPD data. The cophenetic correlation coefficients between the genetic similarities and the unweighted pair group method of arithmetic averages (UPGMA) phenograms were 0.77 for the AFLPs, 0.81 for the RAPDs, and 0.69 for the morphological traits. However, limited clustering simil...
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Annals of Botany, 1997
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ABSTRACT The olive is globally considered as one of the most significant crops, with more than 12... more ABSTRACT The olive is globally considered as one of the most significant crops, with more than 1200 distinctivecultivars and an abundant number of wild forms. Greece, the third largest producer worldwide, has beenconsidered a secondary centre of domestication and its genetic recourses are potentially valuable for olivebreeding. In the current study, the genetic diversity of an extended Greek olive germplasm collection(101 accessions) was revealed using RAPD, ISSR and SSR markers in an attempt to explore the geneticrelationships among them, and comprehend how genetic variability is partitioned between the Greekgermplasm. A Bayesian model-based clustering method was employed and allocation of genotypes intodefined gene pools according to genetic and geographic criteria was detected. Genealogies detected byMedian-Joining coalescent simulations, classified all genotypes into a complex network. Both linear andreticulate ties among the Greek olive cultivars were revealed. Hence, data suggested that both sexual andvegetative propagation have contributed to the evolution of the Greek olive germplasm. Furthermore,clustering of olive cultivars was correlated to their primarily usage (table or oil producing) and fruitsize. Finally, Greek olive cultivars are characterized providing a useful clarification on synonyms andhomonyms, facilitating the identification of duplicates.
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Scientia Horticulturae, 2005
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Genome, 1998
Two tandemly repeated DNA sequences, the 81-bp family and pOS218, have been isolated from a Sau3A... more Two tandemly repeated DNA sequences, the 81-bp family and pOS218, have been isolated from a Sau3AI Olea europaea ssp. sativa partial genomic library. Sequencing of the 81-bp element showed the monomer to be between 78 and 84 bases long and to contain 51-58% adenine and thymidine residues. Comparison between the monomers revealed heterogeneity of the sequence primary structure. The clone pOS218 is 218 bases long, and sequence comparison between the two elements revealed that an internal region of the pOS218 repeated DNA sequence had 79% homology to the 81 bp repeat sequence. A breakage-reunion mechanism, involving the CAAAA sequence, could be responsible for the derivation of pOS218 from the 81 bp family element. By using double target in situ hybridization, co-localization of the two sequences on Olea chromosomes was observed. The sequences were present at DAPI stained heterochromatic regions, as major or minor sites having a subtelomeric or interstitial location. Methylation studies using two sets of isoschizomers, Sau3AI-MboI and MspI-HpaII, demonstrated that most cytosine residues in the GATC sites and the internal cytosine in the CCGG sites of both elements were methylated in O. europaea ssp. sativa. No major difference in methylation was apparent between DNA extracted from young leaves or from callus of O. europaea ssp.sativa. Both elements are also present in Olea chrysophylla, Olea oleaster, and Olea africana, but are absent from other Oleaceae genera, including Phillyrea, Forsythia, Ligustrum, Parasyringa, and Jasminum.Key words: in situ hybridization, methylation, Oleaceae, phylogenetic relationships, repeated sequences.
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Acta Horticulturae, 2010
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Scientia Horticulturae, 2009
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Euphytica, 2003
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Acta Horticulturae, 2012
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Acta Horticulturae, 2011
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Papers by M. Hagidimitriou